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Re: SC 2.2.4 Interruptions

From: Gregg Vanderheiden <gv@trace.wisc.edu>
Date: Fri, 20 Sep 2013 10:38:49 +0100
Cc: "w3c-wai-ig@w3.org list" <w3c-wai-ig@w3.org>
Message-Id: <CBF82FA2-ABD3-449A-B38F-595191772AAA@trace.wisc.edu>
To: Vivienne CONWAY <v.conway@ecu.edu.au>

On Sep 20, 2013, at 8:53 AM, Vivienne CONWAY <v.conway@ecu.edu.au> wrote:

> Hi all
> I'm trying to get my head around what would constitute a failure for 2.2.4 Interruptions. 

Anything that interrupts would be a failure.  For example, there was an advertisement that kept appearing - or changing - that grabs focus it would be a failure. 

Something that refreshes the page every 15 seconds, returning the focus to the top of the page would be another. 

A third 

> Looking at G75, it would seem that it could allow the user to postpone updates and might thereby make a decision based on out-dated information as in the example given of changing the update timing for stock market quotations.

Yes,  if a user postpones updates of any kind, they will  be out of date until they allow the update.  This is logical.    However, using the stock market example, it would allow the person to update the screen, decide to buy, and then be allowed to go through the purchase without having their purchase blocked because the page keeps updating and wrestling control away from them.  (or if they have attention deficit disorder - without pulling their attention away from the task so they are unable to complete it). 

> Can anyone give me an example of where this might be beneficial?  I don't really think the above example is sufficient.

Is this helpful? 

> Regards
> Vivienne L. Conway, B.IT(Hons), MACS CT, AALIA(CS)
> PhD Candidate & Sessional Lecturer, Edith Cowan University, Perth, W.A.
> Director, Web Key IT Pty Ltd.
> v.conway@ecu.edu.au
> v.conway@webkeyit.com
> Mob: 0415 383 673
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Received on Friday, 20 September 2013 09:39:24 UTC

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